Glow plasma degradation of aqueous Direct Black 38

	Glow plasma degradation of aqueous Direct Black 38
	DY Zhang; XL Pan; LH Li; WJ Song; GY Wu
	2010
发表期刊	Fresenius Environmental Bulletin
卷号	19 期号:1 页码:3-8
摘要	Glow plasma degradation of aqueous C.I. Direct Black 38 (DB38) was investigated. It could be shown that DB38 is efficiently degraded by glow plasma under optimum operating parameters (voltage of 600 V, electrode distance of 10 mm, initial solution pH 3), and 95.7% of DB38 in the solution containing 100 mg L-1 DB38 could be removed within 15 min at a degradation rate of 0.116 min(-1). DB38 degradation kinetics obeyed the first-order law. Fe2+, Fe3+ and Mn2+ significantly increased the DB38 degradation rate constant (k). The catalytic effect of transition metal addition followed the descending order of Fe2+ >> Fe3+ > Mn2+. The free radical scavengers catechol and ascorbic acid significantly hindered DB38 degradation rate revealing that a free radical chain mechanism is involved in degradation. Catechol hindered DB38 degradation more than ascorbic acid because catechol had a much higher hydroxyl radical scavenging rate constant than ascorbic acid.
学科领域	环境地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/6841
专题	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文环境地球化学国家重点实验室
推荐引用方式 GB/T 7714	DY Zhang,XL Pan,LH Li,et al. Glow plasma degradation of aqueous Direct Black 38[J]. Fresenius Environmental Bulletin,2010,19(1):3-8.
APA	DY Zhang,XL Pan,LH Li,WJ Song,&GY Wu.(2010).Glow plasma degradation of aqueous Direct Black 38.Fresenius Environmental Bulletin,19(1),3-8.
MLA	DY Zhang,et al."Glow plasma degradation of aqueous Direct Black 38".Fresenius Environmental Bulletin 19.1(2010):3-8.